Hi,
If you go to cruchfield.com you can look up the 910 and then enter your vehicle info. It looks like it will fit into your car without the need for even a dash kit but you should verify this yourself. All of the units fit the same so you don't have to worry about checking each one.
In order to decide which unit to buy, you need to know the differences. All of the units have navigation, am/fm and ipod controls. Some come with the ipod cable but it is available for all of them at a minimal cost. Most seem to prefer the Apple cable to the Pioneer one anyway. So the basic differen